53400303 has 40 divisors (see below), whose sum is σ = 88322256. Its totient is φ = 31881600.

The previous prime is 53400289. The next prime is 53400323. The reversal of 53400303 is 30300435.

It is a happy number.

It is not a de Polignac number, because 53400303 - 2⁶ = 53400239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53400323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 64633 + ... + 65453.

Almost surely, 2^53400303 is an apocalyptic number.

53400303 is a deficient number, since it is larger than the sum of its proper divisors (34921953).

53400303 is a wasteful number, since it uses less digits than its factorization.

53400303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 53400303 is about 7307.5510945870. The cubic root of 53400303 is about 376.5718978262.

Adding to 53400303 its reverse (30300435), we get a palindrome (83700738).

The spelling of 53400303 in words is "fifty-three million, four hundred thousand, three hundred three".